Mineral oils: processes and products – Refining – Metal contaminant removal
Patent
1985-11-06
1989-04-04
Davis, Curtis R.
Mineral oils: processes and products
Refining
Metal contaminant removal
208177, 208253, 208127, 208248, 208 91, 208153, 208299, 502 27, C10G 1700
Patent
active
048183733
ABSTRACT:
A method for updating a concentrate of tar sands bitumen containing fine mineral matter and optionally coarse mineral matter in which solvent-diluted bitumen is contacted for a short time in a riser with hot attrition-resistant substantially catalytically inert acid-resistant fluidizable particles, causing a selective vaporization of the lighter high hydrogen content components of the bitumen. The preferred particles are composed of silica-alumina, most preferably a mixture of mullite and crystalline silica or mullite, crystalline silica and an acid-resistant form of alumina. A portion of the heavier asphaltenes and most of the components which contain metals, sulfur and nitrogen remain on the attrition-resistant fluidizable particles. Fine mineral matter in the bitumen feed also deposits on the fluidized particles instead of being carried over with the vaporized hydrocarbon product. The contact material, with deposit, is contacted with a solution of acid to remove the deposit of mineral matter and deposited metals without decomposing the particles of contact material. The heated particles of contact material are reintroduced into the riser for further contact with incoming diluted bitumen charge.
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Bartholic David B.
Reagan William J.
Davis Curtis R.
Engelhard Corporation
Moselle Inez L.
Myers Helane
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